The use of half-double grommets is widespread and
it is sometimes wrongly assumed that the holding
power will be twice the NBL of the wire. In fact, tests
show that the slip-load will be only 1.5 times the
NBL. See Fig 6b. The holding power also
decreases as the number of grips is reduced. See
Fig 9 and Fig 11b.
● The use of bulldog grips to join two ends of wire
rope is to be avoided: again, it is sometimes wrongly
assumed that this will provide a holding power of
twice the NBL. In a single loop with six grips being
used, (see Fig 6c) the slip-load will be about 1.4
times the NBL. The holding power decreases as the
number of grips is reduced. (See Figs 10 and 11).
● In a soft eye, with 2 grips, and with one or both used
in the reverse manner (see Fig 7 a, b and c ) the eye